If you want to keep ornamental fish, you need knowledge of how to care for them as well as some diseases commonly found in fish. Among these, fungal disease is very common. So, what causes fish fungal disease and how is it treated? If you want to fully understand, follow the article shared by Đức Bình Microbial Products: Explaining the Causes of Fish Fungal Disease and How to Prevent and Treat It from A to Z

Table of Contents

1. What Is Fungal Disease in Ornamental Fish?

As the old saying goes, “Prevention is better than cure,” so before learning about the causes of fish fungal disease and how to prevent it, you need to understand the symptoms of fungal infection in ornamental fish:

The appearance of fungus is an extremely common symptom for ornamental fish in particular, as well as species originating from tropical regions. The cause of this condition is a change in the ambient temperature, dropping lower than normal, along with increased humidity. This change creates favorable conditions for harmful bacteria to thrive, affecting the fish’s health, gradually causing bumps to appear on the body.
Specific signs: ornamental fish feel uncomfortable and stressed as the quality of their living environment (the water) declines, and fungal cells along with many harmful bacteria and microorganisms begin to attack, leading to various symptoms and diseases. People can easily recognize this when the fish’s skin becomes rough and flaky, looking rather unsightly and unpleasant to look at. At the same time, fungal scales appear, looking quite similar to moss.

Fungal disease in ornamental fish

2. Causes of Fish Fungal Disease and How to Prevent It

Fish with fungal disease show fairly clear symptoms. So, what are the causes of this disease? Only by understanding the cause of the disease can we find an effective solution for prevention and treatment.

Some Actual Causes of Fungal Disease in Ornamental Fish

As mentioned above, ornamental fish contract this disease because changes in the environment and water ecosystem create favorable conditions for harmful bacteria, microorganisms, and fungal cells to develop, leading to fungal disease. Below are some of the causes:

First, you clean the fish tank too infrequently or in the wrong way. Improper fish care techniques and overfeeding, which leads to excess leftover food, are also root causes of declining water quality that result in fungal disease.
Second, the disease can also be caused by dead fish in the tank that are not removed and cleaned up promptly, causing the water to become dirty and allowing bacteria and pathogens to appear and begin to spread and cause harm.
Third, we cannot rule out the case where the young fish was already injured beforehand from fighting with other fish or bumping into decorations, rocks, etc., through which bacteria and pathogens can enter the body and begin to cause skin fungus.
Fourth, an extremely hard case to avoid is infection from a fish that already showed symptoms beforehand but you didn’t know, so you still released it into the tank. The pathogens and bacteria present in the water environment then begin to spread to many other fish.

Causes of fish fungal disease and how to prevent it effectively

Some Common Fungal Diseases in Fish

What types of fungal disease exist in fish, and what do they look like? Below are some fungal diseases commonly found in ornamental fish:

Cotton fungus: Just from the name, many people can already picture the symptoms. It’s also a type of skin fungus, but on the outside of the scales or other parts of the fish, dense patches of fuzz appear, quite similar to cotton fibers. It is caused by the fungal cells Achlya and Saprolegnia and a few other species. Sometimes multiple signs and forms of fungus appear at the same time.
Gill Rot: Although this condition is rare, it is extremely dangerous because it directly affects the fish’s mobility and respiratory system. When affected, the gill lamellae and gill filaments stick together due to a mucus secreted from the body, and a few white scale-like spots appear on top. You will notice the fish having difficulty breathing or breathing rapidly.

Fungal disease condition in fish

Guide to Preventing Fungal Disease in Fish

“Prevention is better than cure” is a life motto passed down by our ancestors that can be applied in any situation. If you don’t want your fish to get fungal disease, it’s best to take effective preventive measures. Below are a few tips fish keepers should know:

Maintain stable and good water quality, which suppresses the development of pathogens and is the most effective prevention method. To increase effectiveness in the long run, you should invest in a good-quality water filter for the tank.
Regularly clean the fish tank and keep the water source clean. Some people prefer to use chemical cleaning and water treatment products for speed and convenience. However, this method is not advisable, as it can affect the health of the fish and the farming ecosystem. Therefore, please prioritize using beneficial microorganism-generating probiotics.
If you buy new fish, it’s best to place them in a separate tank, jar, or basin to observe them for a short period. If those fish start showing signs of fungal disease, absolutely do not release them into the tank together with other fish. That is a simple way to prevent fungal disease for the whole tank.

Guide to preventing fungal disease in fish

3. How to Treat Fungal Disease in Fish

If your fish happens to catch fungal disease and there is a high risk of it spreading, treat it immediately! Follow these steps:

Change and clean the tank water to remove some of the disease-causing agents. Note that you should only remove 70% of the old water.
Use a heater to raise the water temperature to 30°C–32°C, which limits the conditions for bacteria and pathogens that cause fungal disease in fish to develop.
Buy Methylene Blue medication and add 3 to 5 drops for every 20L of water into the tank.
Change the water in the tank once a day to remove and limit pathogens.
If you’re raising fish in a large tank, you should catch and divide them into several smaller tanks or basins with a volume of 20L to 40L, depending on the size of the fish. At the same time, we should use an oxygen pump, heater, and regular water changes to limit the ability of pathogens to develop and continuously spread.
In addition, if you cannot find Methylene Blue, you can still go to an ornamental fish store to buy other medications specifically for treating fungal disease in fish, such as: BIO KNOCK 2 from Thailand, Bensol, and Tetra from Japan, etc. Remember to read the instructions carefully before use, as each product has a different “strength” and level of effectiveness.
Finally, once the fish has recovered, you should use beneficial microorganism-generating probiotics for the water environment to prevent fungal disease in fish from recurring.

How to treat fungal disease in fish

4. The Most Effective Way to Prevent and Treat Fungal Disease in Fish

Fungal disease in fish can recur at any time even after treatment. Therefore, fish keepers need to know how to prevent this disease as effectively as possible. According to experts’ recommendations, using probiotics containing billions of beneficial microorganisms poured into the water environment is the best solution.

The microorganisms in probiotics accelerate the decomposition of organic matter, eliminate odors, neutralize toxins, and destroy pathogens and harmful bacteria…. As a result, the water environment is effectively cleaned without altering the water’s properties. This is considered a sustainable, long-term, and cost-effective solution for fish keepers.

⫸ See also: How to Clear Outdoor Fish Pond Water, Things You Should Know

⫸ See also: How to Treat Bottom Sludge in Shrimp and Fish Ponds Simply and Quickly

Distinguishing Fungal Disease in Fish from Similar Diseases

Currently, there are some other diseases that appear in ornamental fish with symptoms quite similar to fungal disease. Therefore, fish keepers need to be able to distinguish the signs of fungal disease from other conditions to avoid confusion. Only then can we find effective ways to prevent and treat it:

White spot disease: Although called “white fungus,” this is actually a disease caused by parasites. When affected, small white spots appear evenly distributed across the fish’s body, resembling grains of white salt sprinkled on the skin. There is another type of fungal disease called water mold, which looks quite similar but forms larger cotton-like patches. Fish keepers need to clearly distinguish these two completely different diseases.
Bacterial disease: Fish with bacterial infections will develop red sores or scale loss similar to fungal disease. However, sores caused by bacteria will have clear, defined edges accompanied by pus or localized swelling. Diseases caused by bacteria respond quickly to antibiotics. In contrast, if the fish has fungal disease, antifungal medication must be used.
External parasites: Some parasites such as flukes and anchor worms attach to the fish’s body, causing itching and rubbing that leads to scale ulceration rather than fungal infection. Only by examining them under a microscope can we detect these parasites.

Emzeo Ornamental Fish Pond Water Treatment – Probiotics That Prevent Fungal Disease in Fish

EMZEO ornamental fish products, in the form of beneficial probiotics for ornamental fish tanks, have become extremely popular and trusted by many people. Typically, you’ll know this product for its ability to clean water and tanks, remove algae and moss, etc.

However, everyone should be aware that EMZEO ornamental fish pond water treatment also has the ability to inhibit and prevent many disease-causing agents in fish such as worm eggs, fungal cells, bacteria, etc. It is capable of preventing fungal disease in fish along with many other risks.

EMZEO probiotics for treating ornamental fish pond water create an effective microbial ecosystem that counteracts fungal disease

EMZEO for Ornamental Fish Ensures Safety and Ecosystem Stability

Unlike other fish tank cleaning products, EMZEO for ornamental fish is a biological product made entirely from natural ingredients, containing billions of beneficial microorganisms, ensuring the health and safety of fish and stabilizing the water ecosystem:

Main ingredients include bean powder, rice bran powder, etc., which are entirely “organic,” making it extremely safe for the environment, fish health, and the ecosystem.
EMZEO for ornamental fish contains billions of beneficial microorganisms such as Actinomyces, Bacillus SP, Lactobacillus SP, Saccharomyces SP, etc., which thoroughly eliminate algae and moss, keep the tank water clear, maintain a suitable ecosystem, and effectively stimulate fish growth and development.
Each gram of EMZEO probiotic for ornamental fish contains more than 10⁸

Effective ways to prevent and treat fungal disease in fish using Emzeo ornamental fish probiotics

Benefits of EMZEO for Ornamental Fish in Preventing Fungal Disease

The EMZEO ornamental fish biological product is a wonderful solution for raising and caring for fish. Let’s go over some of the interesting benefits of these probiotics:

Treats the condition of the tank’s water source, restoring it to the most balanced and stable state.
Removes all algae, moss, and green or yellow buildup on the glass and tank walls.
Eliminates foul, fishy odors and toxic gases in the water environment.
Speeds up the hydrolysis of organic matter, such as leftover food, fish waste, and sediment, helping to keep the water clean and safer.
Suppresses and inhibits agents that cause fungal disease in fish, preventing the disease more effectively than ever.
Creates an abundant source of beneficial microorganisms, improving water quality.
Notably, there’s no need to change the fish tank water if EMZEO is used regularly.

How to Use EMZEO for Ornamental Fish

Use 5g of EMZEO probiotic for every 100L of water. Remember to put the probiotic powder into the pump’s filter tray.
After adding it, simply let the tank’s water pump run as normal.
You will see results within 2 to 3 days.
Continue using it every 10 to 15 days to maintain the fish’s health and the beauty of the tank.

5. Tips for Restoring Fish Health After Treating Fungal Disease

After successfully detecting and treating fungal disease in fish, fish keepers need a plan to restore their health. During this stage, fish need special care:

Ensure Water Quality

Water quality must be the top priority during the recovery stage after treating the disease. Specifically, you need to:

Completely remove any remaining medication or antibiotics from the water. You can use activated carbon or other materials capable of absorbing medication residue in the water.
Next, we will proceed to change the water: 10 to 20% of the tank’s water every 2 to 3 days, continuously for 1 to 2 weeks after treatment. This helps effectively remove accumulated toxins and refresh the water environment without causing shock
Regularly check water quality by closely monitoring indicators such as nitrite, ammonia, and pH. Clean water helps fish recover quickly and reduces stress

Nutrition

Provide fish with an adequate amount of food that is high in nutritional value. Fish keepers should choose food that’s easy to digest and rich in vitamins and protein.
Follow a reasonable feeding schedule; don’t feed too much at once. Instead, we should divide meals into smaller portions, 2 to 3 times a day, so fish can consume all the food within a few minutes. This will minimize leftover food that pollutes the water.
Adding vitamins, minerals, or specialized probiotics for ornamental fish is also essential.

Reduce Stress and Regularly Monitor Fish Health

Ensure a quiet water environment, avoiding noise or strong vibrations.
Provide an adequate amount of light; gentle lighting helps fish relax and reduces stress
Regularly monitor fish behavior in order to provide timely support
During this time, you should not introduce new fish, as it can increase stress for fish that have just recovered
Regularly aerate the water to provide dissolved oxygen, especially when fish are weak as a result of the treatment process.

Above are the causes of fish fungal disease and how to prevent it from A to Z. We hope the above sharing from Đức Bình Microbial Products will provide everyone with useful knowledge for caring for ornamental fish. Thank you, dear readers, for reading this article.

Contact Information

Đức Bình Microbial Products – Center for Research and Application of Biological Products, specializing in researching, manufacturing, and applying product lines: probiotics, septic tank probiotics, wastewater treatment probiotics, probiotics for aquaculture, biological products …

Address: 1B Ngõ 774 Kim Giang, Thanh Liệt, Hanoi
Tel: 0934.214.579
Hotline: 024.66.55.46.86

Email: chephamvisinhungdung@gmail.com
Website: https://chephamvisinh.vn